Method and means for creasing cardboard and like material



2 Sheets-Sheet l l E. I HBlsH'oP v Filed March 9. 1927 METHOD AND MEANS FQR CREASING CARDBOARD AND LIKE IA'TERIAL Mun ...L ...L ...1-5L 2...... .55.1.1.5

Sept. 24, 1929.

`vlllllllllllllllllifl E. L. BISHOP Sept. 24, .1929.

KEIHOU AND MEANS -FOR CREASING CARDBOARD AND LIKE MATERIAL Filed March 9, 1927 2 Sheets- Sheet -2 Patented Sept. 24, 1929 treuren sr TlS FATENT tllflt EDWN LESIE BISHOP, OF BIRlJINGHAlVI, ENGLANB LIETHD AND MEANS FOB, CREASING CARDBOARD AND LK TEATERIAL Application filed March 9, 1927, erial No. 173,532,

folding of the boar l without any splitting.

rllhe present invention has for its object to' provide for the ll section trea''n'ient or creasing' of the board more expeditiously and generally more elliciently than heretofore was the case.

flrccording to the present invention, app" ratus for treating or creasing' the boardf comprises in combination two wheels or like elements adapted to rotate at a uniform speed', the faces whereof are disposed in angular relationship so that the rims of the wheels or the like at one point are spaced slightly apart ud adapted to diverge from one another to a constitute a wedge-shaped space, a deflector disposed immediately above or associated with such space, and means such as rollers c0- rtlier, according to my invention, the apparat-us coniprises in combination two side by side wheels, or like elements, adapted to rota te a uniform speed upon axes intersecting in oblique or obtuse relationship, a plurality of rollers or equivalent means for compelling the board?7 to follow the peripheral contour of one wheel or like element, and a deflector immediately above the wedge-shaped cavity occurring' between the wheel rims and faces adapted to urge the board7 into such cavity to effect the creasing operation.

In the foregoing apparatus means may be provided for adjusting the effective operative space at the point of adjacency between the wheels or like elements, and, further, means may be also incorporated in combination with the foregoing', or separately, for adjusting the settingr of the wedge-shaped cavity in relation to the deflector.

and Great Britain Maren 23, 1526.

ln operation the board is fed on to the rotating wheels, discs or like elements beneath the defiector, and during its movement through the apparatus it is bent by the rollers or equivalent device to an arcuate forniation to follow the contourof at least one of the wheels or like elements, and is also flexed 'transversely to an obtuse or equivalent angular forA ation, by means ofthe deflector which urp the board between the wheels and forms the ll shaped crease, as hereinafter more particularly described and illustrated.

My invention. further consists in an iin proved mode of creasing or treating' the board so that it can be easily bent orv folded, consisting' in bending the board7 to an arcu ate formation upon a rotating annular body, further bending; said board transversely to an obtuse angle formation, and directing` the board at or about the unction of said angle between two converging' bodies such as rotating' wheels to form alaterally compressed U shaped crease in the board.

ln order that this invention may be clearly understood and readily carried into practice, reference may be had to the appended eX- planatorv sheet of drawings, upon which z- Fie'ure l illustrates apparatus for treating' or creasing' cardboard according to the present invention, in part sectional elevation.

Figure 2 is a sectional ond elevation of the apparatus shown in Figure l.

Figures 3, 4 and 5 are diagrammatical views, hereinafter referred to, illustrating the actual operation of creasing.

ln a convenient embodiment of the present invention l employ a main frame or structure a wherein a horizontal shaft b is rotatably mounted, and adapted to be driven at will, as for instance, from pulley mechanism 1. o1 is a sleeve keyed to the shaft Z) but adapted to slide thereon, said sleeve carrying' the wheel, or like element, o which is provided with a rim G2 of l. section. This wheel, or like element, c, therefore, has a cylindrical peripheral face and an inner abrupt face at right angles thereto. Z1 and (Z2 are levers fulcrumed upon the sleeve G1 and united by a pin (Z3, and the lever (Z1 is provided with a boss d4 the axis of which is disposed obliquely to the axis of the shaft b and intersects therewith. Rotatably mounted upon this boss (Z4 is the wheel, or like element, d comj'ilementary to toe wheel, or like element, c, and this wheel d is provided with the particular' rim illustrated, which renders the wheel, or like element, of conical formation. It will be seen from the right hand half of the Figure l that the wheels, or like elements, Z and c are placed in close proximity at their upper part (see also particularly Figure 3), and, further, at this point the rims are facially aligned horizontally. The conical wheel (Z has an inner abrupt face (ZG adapted to lie parallel to the corresponding abrupt face c:I on the wheel c at the point of adjacency. The wheel, or like element, c is connected to the wheel, or like element, Z by a flexible driving disc c", such as is used in the universal joint of a motor vehicle. Further, the two wheels, or like elements, are urged apart by means of a helical spring ci", a stop CG being provided upon the sleeve and a thrust bearing c7.

The wheels, or like elements, c preferably externally of serrated or roughened formation, and adapted to co-operate with these wheels, or like elements, a plurality of spring pressed rollers c carried by a slide el mounted upon an upper guido rail el of the frame or structure o. This slide e1v has a lug e2 which is perforated and tapped to receive a horizontal screw-threaded shaft f. Provided upon the slide el is a bracket g which. is longitudinally slidable for adjustment purposes in relation to the slide c by means of a screw pin g1. This bracket g is extended downwardly at g2 and carries a vertical adjustal'ile holder g3 for the deflector zf, which is spaced immediately above and/or partially within (according to adjustment) the wedge-shaped cavity occurring between the wheels, or like elements, and may terminate (see Figure 2) slightly previous to the point of adjacency of the said wheels, or like elements. lts lower face hl preferably extends horizontally, after which it is directed slightly upwardly .t ft2 slightly preceding the point of adjacency of the wheels, or like elements. g4' are plain apertures in the bracket g for the reception of the screw-threaded shaft f.

lt will be appreciated from the Figure l that the mechanism hereinbefore described duplicated and ogpositely arranged whereby a portion of board may have two parallel creases simultaneously inserted therein, and the adjustment means for varying the space between these creases involves the following mechanism zw'llhe shaft whereon it wil be seen right and left hand threads are cut, and which journalled in the frame a, wheel-carrying arms j having bosses engaging the respective screw threads on the shaft ye', gear wheels 7c, one of which may have a handle 701, and which gear together shafts and The wheel-carrying arm has a hollow bearing boss jg (Figure l) interposed between the levers d1 and cl2 and other mechanism hereinafter described. Rotation of the shaft 71 as for instance by the operation of the handle k1 causes the lateral displacement of the arms and consequent adjustment of one wheel mechanism c l in relation to the other oppositely arranged and comj'ilementary wheel mechanism c (l. Synchronized withv this movement is the movement of the rollers e and deflector 7L conserpient upon the rotation of the top shaft whereby these members always assume a correct relationship to their respective wheels c and (Z. Z and m are longitudinal stationary shafts parallel to the shafts f and and upon these shafts a bracket extenon j of the wheel-carrying arm j is adapted to slide. lhis extension ji carries bearings fit and a manually rotatable shaft n having a f-serew connection al with a boss a2 on one extremity of a link al, which is coupled to the pin d uniting the levers d1 and (Z2. Fulcrumed to the boss a2 are dual wedge elenients o having inclined faces 01 adapted to co-operate with corresponding inclined faces provided upon the bearing jg of the wheel carrying arm y) is a table whercon the board is placed, said table terminating (as shown particularly in Figure 2) immediately beneath the deflector 7L.

Piy rotation of the handle ai' the boss n2 is displaced along the shaft nl and the levers d1 (f7/2 thereby pivoted on the sleeve c1 which is tixed so far as rotation is concerned. rlhis pivotal movement of the levers (Z1 Z2 rotates the obliquely set boss d and causes the point of adj acency of the wheels, or like elements, to be adjusted circumferentially of the wheels and in relation to the fixed dcflector it.

ln this manner` ther rev` by Ahe operation of the handle at the circumferential relation between the dei'lector 7i and the wed ge-shaped cavity occurring between the wheels or like elements can be readily varied to suit particular requirements. Further, simultaneously with the operation of the handle n4, the wedge elements o are actuated, thereby adjusting the effective space between the wheels, or like elements, at their point of adjacency, as will be seen from the Figures l and 2. For instance, by the downward movement of the wedge elements 0 the spring c5 is permitted to thrust the wheels c an d d further apart.

lilith the present machine, therefore, in order te adapt same to different thicknesses of boardv` it is only necessary to operate the handle n", thus effecting the dual function of adjusting the circumferential point of adjacency of the complementary wheels, or like elements, in relation to the deflect-or, and also adjusting the spacing of the said wheels or like elements at their said point of adj aceney.

Alternatively, if desired, these two Operations may be effected independently, as for instance, by connecting the wedge elements o to an operable shaft similar to a but independent thereof.

In the operation of lthe apparatus the board is placed upon the table p and brought beneath the deflector it against the. uniformly rotating wheels c (l. The rollers e ensure the boardY following the circumference of the wheel c, and the lower edge h1 of the deflector urges or diverts a portion of the board7 between the faces 02 and Z5 of the wheels creating a channel shaped crease or depression, which is gradually squeezed or clinched laterally up to the point of adjacency of the wheels, at which point the desired U shaped crease is completely effected. During this operation, that part of the board associated with the conical wheel rises to an obtuse angle relationship with the remainder of the board7 (see particularly Figure This is found advantageous for ensuring the requisite amount of cardboard being fed between the rollers to constitute the U-shaped crease without any splitting or tearing of the board. Figure el illustrates diagrammatically the deflector urging the board between the abrupt faces of the wheels not far remote from their point of adjacency and Figure 5 illustrates the three rollers ensuring the board7 being bent to the circumference of one of the wheels or like elements, the deflector, in combination ith the said rollers, bringing about the transverse, oblique or concave flexing of the board.

In the present invention, therefore, lthe board is fed over two rotating wheels, or like elements, set on oblique intersecting axes, and is urged between the divergent rims by means of a deflector, and bent to the circumference of one of the wheels by rollers, this particular fiexing of the board both longitudinally and laterally (with regard to the creasing) ensuring a very eficient crease.

The creasing in this invention is effected very expeditiously and generally efficiently, and the board may be easily folded to the desired angle formation without causing any cracking, and retaining the full strength of the board at the bent portion.

If desired, the rollers e or their equivalent may be dispensed with, in which case the deflector 7L is designed so that it not only urges the board between the wheels in the creasing operation, but performs the additional function of bending the board circumferentially around the wheels, which function is normally performed by the rollers c. I-Iowever, I find it advantageous to use the rollers to ensure the more efficient movement of the board through the apparatus during the creasing operation.

In the present invention cthe board is essentially adapted to be bent or flexed around the peripheries of the wheels or like elements at or about their point of adjacency during the creasing operation, it being found that such bending or flexing is essential to the elficient creasing of the board, and, further, provision is advantageously made whereby the board is caused to be bent transversely to an obtuse angular formation, as previously specified, to still further assist the effective operation of creasing.

I claim:

1. In an apparatus for creasing cardboard and the like, two peripherally curved rotary members placed at an angle relative to each other so as to be slightly spaced at their point of adjacency, means for rotating said members at uniform speed, and relatively stationary means located at fixed points with reference to the peripheries of said rotary members cooperating with said members so as to bend the cardboard, at the same time flexing' the same along the curve of said members.

2. In an apparatus for creasing cardboard and the like, two peripherally curved rotary members having abrupt edges and placed at an angle relative to each other so as to be slightly spaced at their point of adjacency, means for positively rotating said members at a uniform speed, and adjustable relatively stationary means located at fixed points with reference to the peripheries of said rotary members cooperating with said members so as to bend the cardboard at the same time flexing the same along the curve of said members.

3. In an apparatus for creasing cardboard and the like, twol peripherally curved rotary members placed at an angle relative to each other so as to be slightly spaced at their point of adjacency, means for positively rotating said members at a uniform speed, relatively stationary means located at fixed points with reference to the peripheries of said rotary members cooperating with said members so as to bend the cardboard at the same time flexing the same along the curve of said members, and a substantially fiat table for feeding the cardboard to said members.

l. In an apparatus for creasing cardboard and the like, two peripherally curved rotary members placed at an angle relative to each other so as to be slightly spaced at their point of adjacency, means for positively rotating said members at a uniform speed, relatively stationary means located at fixed points with reference to the peripheries of said rotary members cooperating with said members so as to bend the cardboard, thereby causing it to be pinched between the cooperating faces of said members, at the same time flexing the board along the curve of said members, a substantially flat table for feeding the cardboard to said members, and means for adjusting the relative position of said members for enlarging or reducing the space.

5. In an apparatus for creasing cardboard and the like, two peripherally curved rotary members placed at an angle relative to each other so as to be slightly spaced at their point of adjacency, means lor positively rotating said members, relatively stationary means located at lixed points with reference to the periplieries of said rotary members cooperating' with said n embers so as to bend the cardboard transversely thereby causing it to be pinched between the cooperating faces ol said meinbe's, and means causing the cardboard 'to follow 'tor a short distance the contour ol' said members thereby texing the cardboard.

6. ln an apparatus for creasing',l cardboard and the lilre, two peripherally carved rotary members placed at an angle relative to each other so as to be slightly spaced at their point ot adjacency, means ilf'or positively ri'itatinp' said members, adjustable relatively stationary means cooperating with said ineinliii so as to bend the cardboard transversely, 'thereb y causing it to be pinched between the cooperating' lia ces of said members, and a plurality oit rollers causing the cardboard to lollow for short distance the contour ot said members thereby flexing the cardboard.

'l'. ln an apparatus tor creasing' cardboard and the like, two peripherally curved niembers arranged to rotate upon intersecting axes so that at. their point oit adjacency said members will be slightly spaced apart, their inner faces at the operative point being; parallel, means tor positively rotating said members at a uniform speed, relatively stationary means cooperating` with said niembers so as to bend the cardboard transversely, and a. means tor causing the cardboard to 'follow for a short distance the contour oil' said members thereby flexing' the cardboard.

8. ln an aplmratus iter creasing cardboard and the like, two peripherally curved meni-y bers arranged to rotate upon intersecting` axes so that at their point of adjacency said t members will be slightly spaced apart, their' inner faces at the operative point being parallel., means 'for positively rotating .said members at a uniform speed, relatively stationary means cooperating with said mem1 bers so as to bend the cardboard transversely, a means for causing the cardboard to follow tor a short distance the contour oi said meinbers thereby flexing the cardboard, and means Yl'or adjusting said relatively stationary means.

9. Apparatus as specified in claim 7, including a driving .shaft and in which one of said men'ibers is provided with a sleeve mounted on said driving shaft and the other member is rotatably mounted on a cylindrical boss mounted upon said sleeve and having' its axis disposed obliquely to the axis oi' said sha'lftintersecting therewith, including' a flexible driving` member connecting, said members.

10. Apparatus as specilied in claim 7, including' a driving` shaft and in which one of said members is provided with a sleeve mounted on said driving shaft and the other member is rotatably mounted on a cylindrical boss mounted upon said sleeve and having` its axis disposed obliquely to the axis et said shaft intersecting therewith, including;` a flexible driving member connecting said members, and means for displacing` said boss upon' said sleeve for adjusting the point oi adjacency et said members.

ll. Apparatus as specitied in claim 7, in. eludingi a driving shattand in which one oi said members is provided with a sleeve n'iounted on said driving shalt and the other member is rotatably mounted on cylindrical boss mounted upon said sleeve and having its axis disposed. obliquely to the axis olf said shaft intersecting therewith, including; ay llexible driving member connecting` said members, means tor displacing said boss upon said sleei'e for adjusting` the point ot adj acency ot said members, and a compression spring' interposed between said members.

i2. Apparatus as specilied in claim 7, including; means for adjusting the relative position oit said members, said means being adapted to simultaneously eiilect the adjustment et said relatively stationary means and said ilexing means.

i3. Apparatus as specilied in claim 7, including means for adj usting the relative position of said members, said means being adapted te simultaneously etlect the adjustment of said relatively stationary means and said flexing means, said adjusting' means comprising); two parallel shafts each incorporating lett and right hand threads and being` `geared together, an arm associated with said members adapted to be oper ted by one of said shafts, and a slide carrying v,iid relatively stationary means and. said l'lexinpr means operated by said other shaft.

14. The method ot creasing cardboard and the like, which consists in flexing the cardboard along a curved path, at the saine time bending' one edge only et the cardboard transversely to form an obtuse angle and crea-sing the beard at the a'fex ot the obtuse angle whereby a plurality of creases can be formed simultaneously.

ln witness whereof l have hereunto set my hand.

E. LESLIE BSH'OP. 

